Composite powder in which jade powder particles are impregnated in porous polymer, cosmetic composition containing same and manufacturing method for same

ABSTRACT

The present invention relates to a composite powder of jade powder and a porous polymer, and more specifically relates to a composite powder (jade sphere) in which jade powder particles are impregnated in a porous polymer, the composite powder being produced by spraying, in one step, a dispersion in which jade powder has been dispersed in a solution that dissolves porous polymers, and to a cosmetic composition containing the composite powder, and to a manufacturing method for the composite powder.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a divisional of U.S. application Ser. No.15/576,125, filed Nov. 21, 2017 which in turn is a 371 ofPCT/KR2016/006882, filed on Jun. 28, 2016 which claims the benefit ofKorean Patent Application No. 10-2015-0092868, filed Jun. 30, 2015 andKorean Patent Application No. 10-2016-0080232, filed Jun. 27, 2016 thecontents of each of which are incorporated herein by reference.

TECHNICAL FIELD

The present invention relates to a composite powder including jadepowder and a porous polymer, and more particularly, to a compositepowder (jade sphere) in which jade powder particles are impregnated in aporous polymer, the composite powder being manufactured by spraying adispersion, in which jade powder is dispersed in a solution in which aporous polymer is dissolved, using a one-step process, a cosmeticcomposition containing the same, and a manufacturing method for thesame.

BACKGROUND ART

When a composite powder in which two or more powders are combined ismanufactured as a composite of organic powder and inorganic powder, amethod for manufacturing a composite powder, which includes preparingunderlying powder particles (A) and coating surfaces of the powderparticles (A) with other powder particles (B), has been generally used.However, such technology has a drawback in that it has a complicatedprocedure due to a two-step manufacturing process, and also uniquecharacteristics of the two or more powders may not be suitablyexhibited. On the other hand, the method differs in that, when a spraydrying process and an electro-spraying process are applied to apowdering method to manufacture a composite powder, a granular powdermay be manufactured using a one-step process by uniformly dispersing theother powder particles (B) in the underlying powder particles (A) sothat the other powder particles (B) permeate into the underlying powderparticles (A).

Spray drying technology is a method that includes spraying a material ina dissolved state, which is composed of a raw material powder, asolvent, and a binder, using a spraying unit such as a nozzle or arolling disk and instantly drying the dissolved material with hot wind.More specifically, the spray drying is a technique in which a granularproduct is directly obtained from a liquid raw material by atomizing aliquid raw material such as a solution, an emulsion, a dispersion, asuspension, a slurry, or the like to increase a surface area of theliquid raw material so as to increase a heat-receiving area, andinstantly drying the liquid raw material through direct contact with ahot air current, and is characterized in that the drying and powderingare performed in a single step.

Therefore, because the contact of the products with heat is realizedwithin several seconds, the spray drying has advantages in that it has arelatively small effect on physical properties of the products and theproduced products may be easily handled. Therefore, the spray drying hasbeen widely used to dry a natural extract and obtain granules when fineceramics, milk powders, medicines, foods, dyes, and pigments aremanufactured.

Korean Unexamined Patent Publication No. 2002-0091779 discloses a spraydrying process, which includes spraying slurry including a raw materialpowder to form droplets and drying the droplets to obtain ceramicgranules, thereby manufacturing a ceramic powder having excellentdispersing and filling properties. Korean Unexamined Patent PublicationNo. 2014-0110439 discloses a method for manufacturing a spherical boronnitride powder having a constant particle size using a spray dryingtechnique.

Meanwhile, electro-spraying technology is a method for manufacturingfine particles, which includes injecting a polymer solution havingcertain electrical conductivity and viscosity through a capillary tubeand applying an electrostatic force to the polymer solution. Generally,when the polymer solution is sprayed through a nozzle disposed in avertical position, the balance between the gravity and the surfacetension of the polymer solution is made at an end of the nozzle to formhemispherical drops so that the drops hang from the end of the nozzle.In this case, when an electric field is applied to the hemisphericaldrops, an orientation of charges or dipoles on surfaces of thehemispherical drops is induced at the interface between an air space andthe solution, and a force opposing the surface tension is generated dueto the repulsive power of such charges or dipoles. Therefore, ahemispherical surface of the end of the nozzle is stretched to form aconical surface referred to as a Taylor cone, and a charged polymersolution is released from the Taylor cone when the repulsive power ofthe charges or dipoles is greater than a force overcoming the surfacetension. In this case, the polymer solution having low viscosity issprayed in the form of fine drops due to the surface tension. Like thespray drying, the electro-spraying includes powdering the polymersolution in a single step.

The electro-spraying has advantages in that particles may be easilyprepared due to a simple shape and structure of the device, the preparedparticles may have a mono-dispersed distribution, and theelectro-spraying is useful in manufacturing particles having varioussizes ranging from several tens of nanometers to several hundreds ofmicrometers. Therefore, the electro-spraying has been widely used in thefields of thin film attachment, coating of a metal surface, mass andstructural analyses of proteins and biochemical materials, and the like.

In recent years, research has been conducted to apply theelectro-spraying to generation of particles including a drug in thefield of drug delivery. For example, Registered Korean Patent No.10-1471280 discloses a method for manufacturing ultrafine nanopowders ofa poorly soluble substance, which includes electro-spraying a poorlysoluble substance solution, which is prepared by dissolving a poorlysoluble substance in an organic solvent and dispersing a surfactant inthe resulting solution, in order to improve an in vivo absorption rateof the poorly soluble drug.

Considering that the spray drying and electro-spraying techniques may beuseful in preparing a liquid raw material into granules through aone-step process, easily adjusting a particle size of the granules, andmanufacturing spherical particles, the present inventors have developeda method of uniformly impregnating amorphous coarse jade powderparticles in a porous polymer using spray drying and electro-sprayingprocesses. Therefore, the present invention has been completed based onthe facts.

PRIOR-ART DOCUMENT

Registered Korean Patent No. 10-1015386 entitled “Spray Dryer”

DISCLOSURE Technical Problem

There are known techniques in which jade powder particles are includedin a cosmetic composition for the purpose of a skin moisturizing orwhitening effect, and the like. However, when the jade powder particlesare formulated and applied onto the skin, the jade powder particles havea poor sense of feeling in use thereof because the jade powder particleshave a coarse surface. Also, the jade powder particles have a drawbackin that a white cast appears due to lumping of the jade powderparticles, and whiteness may be degraded due to high chromaticness ofjade itself when the jade powder particles are included in make-upcosmetics.

Technical Solution

To solve the above problems, according to one aspect of the presentinvention, there are provided a composite powder (hereinafter referredto as a jade sphere) in which jade powder particles are uniformlyimpregnated in a porous polymer by dispersing jade powder in a solutionin which a porous polymer is dissolved, and then spraying the dispersionusing a one-step spray drying or electro-spraying process, a cosmeticcomposition including the same, and a manufacturing method for the same.

The jade powder may have a particle size of 10,000 to 20,000 meshes, andmay be impregnated at a content of 10 to 90% by weight, preferably 50 to90% by weight, based on the total weight of the composite powder.

The porous polymer is preferably selected from the group consisting ofpoly(methyl methacrylate) (PMMA), poly(vinyl pyrrolidone) (PVP),poly(caprolactone) (PCL), and poly(L-lactic acid) (PLLA).

Advantageous Effects

When a jade sphere of the present invention in which jade powderparticles are uniformly impregnated in a porous polymer is formulated asa cosmetic composition, the jade sphere has improved cosmetic durabilitydue to a blue light-blocking effect of the jade powder and a sebumabsorption powder of the porous polymer, compared to cosmetics includingthe jade powder alone.

Also, when an amorphous coarse jade powder is impregnated in a sphericalporous polymer, the jade powder can be effective in improvingapplicability, spreadability and softness, preventing a white cast bysolving a lumping phenomenon, and improving whiteness.

DESCRIPTION OF DRAWINGS

FIG. 1 is a scanning electron microscope (SEM) image of a jade powderapplied to the present invention.

FIG. 2 is a scanning electron microscope (SEM) image of a jade sphere ofthe present invention: (A) is an image of a surface of the jade sphere,and (B) is an image of a cut-off plane of the jade sphere.

FIG. 3 is an image of the jade sphere of the present inventionquantitatively and qualitatively analyzed using an energy dispersiveX-ray (EDX) spectrometer: (A) is an image of a surface of the jadesphere, and (B) is an image of individual elements included in the jadesphere after the elements are visualized.

FIG. 4 shows test results of reflectance (%) of the jade sphere of thepresent invention in the visible light spectrum.

FIG. 5 shows test results of whiteness (% R) of the jade sphere of thepresent invention.

FIG. 6 shows test results of an oil absorption rate (mL/g) of the jadesphere of the present invention.

FIG. 7 shows test results of reflectance (%) of formulations includingthe jade sphere of the present invention in the visible light spectrum.

FIG. 8 shows test results of whiteness (% R) of the formulationsincluding the jade sphere of the present invention.

BEST MODE

The present invention relates to a composite powder including jadepowder and a porous polymer, and more particularly, to a compositepowder (hereinafter referred to as a jade sphere) in which jade powderparticles are uniformly impregnated in a porous polymer by dispersingjade powder in a solution in which a porous polymer is dissolved, andthen spraying the dispersion using a one-step spray drying orelectro-spraying process, a cosmetic composition containing the same,and a manufacturing method for the same. In the present invention, theterm ‘impregnation’ refers to a situation in which other powderparticles are uniformly dispersed in underlying powder particles so thatthe other powder particles permeate into the underlying powderparticles. In this case, such a configuration differs from aconfiguration in which surfaces of powder particles are coated withother powder particles or a configuration in which powder particles aresupported between pores on surfaces of other powder particles, as knownin the art. Hereinafter, the present invention will be described indetail.

Jade

Generally, jade is divided into jadeite jade and nephrite jade. Nephritejade contains three minerals beneficial to the human body, that is,calcium (Ca), iron (Fe), magnesium (Mg) as main components unlike minorcomponents such as sodium (Na) and aluminum (Al) contained in jadeitejade. Therefore, types of the jade powder applicable to the presentinvention are not limited. More preferably, the nephrite jade is used.

Also, Chuncheon jade used in the present invention is a kind of nephritejade, that is, high-quality nephrite jade produced in the Chuncheon areaof Gangwon-do. In this case, Chuncheon jade is an altered mineral oftremolite and actinolite of the amphibole family, which has a compactand delicate texture and also has a pilotoxitic texture with strongtoughness.

In the present invention, jade is ground into powder, which is then usedas the jade powder. As a conventional method performed by a personhaving ordinary skill in the art, a method of grinding nephrite jadeinto powder is not limited. However, the jade powder that may be usedfor a cosmetic composition according to the present invention isprocessed so that the jade powder particles have a particle sizedistribution of 10,000 to 20,000 meshes. When the particle sizedistribution is greater than 20,000 meshes, an effect of the jade powdermay be not significant. On the other hand, when the particle sizedistribution is less than 10,000 meshes, a sense of feeling in use uponapplication to the skin may be degraded due to a coarse surface of thespherical jade sphere.

Porous Polymer

In the present invention, a porous polymer in which the jade powderparticles are impregnated is in a spherical powdery phase having oilabsorption and sebum absorption powder. For example, poly(methylmethacrylate) (PMMA) is used as the porous polymer. In addition, theporous polymer may be selected from the group consisting of poly(vinylpyrrolidone) (PVP), poly(caprolactone) (PCL), and poly(L-lactic acid)(PLLA), but the prevent invention is not limited thereto.

Such a porous polymer is easily blended in the manufacture of variouscosmetic formulations because the porous polymer has a sphericalparticle shape, and has excellent senses of feeling in use thereof, suchas applicability, and the like because spherical particulates are rolledon the skin when the cosmetic formulations are applied onto the skin.Therefore, the porous polymer is generally often used in fundamentalcosmetics for controlling sebum and make-up cosmetics for modifying acolor tone of the skin due to surface characteristics of the sphericalparticulates, such as an effect of preventing greasiness of the skinusing light scattering, and an effect of improving cosmetic durability.

Jade Sphere

In the jade sphere of the present invention, that is, a composite powderin which jade powder particles are uniformly impregnated in a porouspolymer, the jade powder may be impregnated at a content of 10 to 90% byweight, more preferably impregnated at a content of 50 to 90% by weight,based on the total weight of the jade sphere. Also, the jade sphere mayhave an average particle diameter of 5 to 20 μm. Such characteristics ofthe jade sphere make the composite powder suitable for use as a cosmeticmaterial in terms of an effect of the jade powder and a sense of feelingin use thereof upon application to the skin.

According to the present invention, the jade powder may be uniformlyimpregnated in the porous polymer by spray-drying or electro-spraying aporous polymer dispersion, in which the jade powder is dispersed in aporous polymer solution, to manufacture a jade sphere using a one-stepprocess. In this case, an emulsifying agent is preferably excluded sothat super-water repellency of the porous polymer can be achieved. Theporous powder produced by a method known in the art, such as emulsionpolymerization, has drawbacks in that the emulsifying agent irritatesthe skin because the use of the emulsifying agent is inevitable but thesubsequent complete removal of the emulsifying agent is impossible, andthe skin may get dry because the porous powder absorbs sebum of the skinas well as moisture. However, according to the present invention, thereis no skin irritation caused by the emulsifying agent, only the sebummay be selectively absorbed due to super-water repellency, and cosmeticdurability may be enhanced.

Also, the porous polymer solution may be obtained by dissolvingpoly(methyl methacrylate) (PMMA) in a mixed solvent of dichloromethane(DCM) and hexanol. In this case, a mixing ratio (weight ratio) of thedichloromethane (DCM) and hexanol may be chosen in a range of 9:1 to7:3. In this case, the hexanol serves to form pores in the porouspolymer. Therefore, it is not desirable because the size of the poresmay be too small when the ratio of the hexanol is less than 10% byweight of the total solvent, whereas the size of the pores may be toohigh when the ratio of the hexanol is greater than 30% by weight of thetotal solvent.

In the present invention, porosity characteristics of the jade spheremay be controlled depending on conditions for a manufacturing process.The controllable porosity characteristics may include an average poresize, porosity, the total area of the pores, and the like. Specifically,the average pore size may be in a range of 15 to 800 nm, more preferably250 to 600 nm, and the porosity may be in a range of 40 to 85%, morepreferably 50 to 75%. Also, the total area of the pores may be in arange of 1 to 100 m²/g, more preferably 5 to 80 m²/g.

The jade sphere having such characteristics may be effective inenhancing an oil absorption rate due to the pore size and porosity. Theoil absorption rate may be expressed as an intrusion volume of mercuryto be described below. The intrusion volume of mercury in the jadesphere according to the present invention may be measured to be in arange of 0.5 to 5 cm³/g, the value of which is at a reliable level sothat the intrusion volume of mercury may be expressed as the oilabsorption rate.

Conventional porous polymers have a relatively larger specific surfacearea but have a smaller average pore size and porosity due to asingle-sized mesoporous structure, but the jade sphere of the presentinvention is much more advantageous in absorbing oils through acapillary action because pore channels are formed due to a multiporous(Micro+Meso+Macro) structure.

Cosmetic Composition

The jade sphere may be applied as a cosmetic composition. In this case,the jade sphere is preferably included at a content of 0.1 to 5.0% byweight, based on the total weight of the cosmetics. When the jade powderis present at an excessive content, the inherent natures or softness ofraw materials for cosmetics, and a sense of feeling in use uponapplication to the skin may be degraded, and an increase in unit priceof products may also be caused due to expensive jade. On the other hand,when the jade powder is present at a very small content, it isundesirable because it is impossible to expect effects caused by thejade powder.

Also, in addition to the jade powder, the cosmetic composition of thepresent invention may further include functional additives forimprovement of skin conditions, such as improvement of skin wrinkles,improvement of skin whitening, improvement of skin elasticity,improvement of facial skin sagging, improvement of skin moisturizing,skin gloss improvement, skin aging prevention (e.g., inhibition of skinwrinkle formation and dermatosclerosis caused by photoaging),improvement of dark circles, and improvement of horny skin; functionaladditives for blocking ultraviolet (UV) rays; or components included intypical cosmetic compositions.

The functional additives for improvement of skin conditions may includecomponents selected from the group consisting of water-soluble vitamins,fat-soluble vitamins, high-molecular-weight peptides,high-molecular-weight polysaccharides, sphingolipids, natural extracts,and fermented materials. Also, the functional additive for blocking UVrays may further include inorganic powders such as titanium dioxide(TiO₂), zinc oxide (ZnO), cerium oxide (CeO₂), and the like. Inaddition, the components included in the typical cosmetic compositionsmay be further blended together with the functional additives, whennecessary.

Blending components included in addition to the aforementionedcomponents may include oily components, moisturizing agents, emollients,surfactants, organic and inorganic pigments, organic powders, UVabsorbing agents, preservatives, disinfectants, antioxidants, plantextracts, pH regulators, alcohols, dyes, fragrances, blood flowstimulants, cooling agents, anhydrotics, purified water, and the like,but the present invention is not limited thereto.

The cosmetic composition including the jade sphere may be formulatedinto any one form selected from toners, lotions, creams, sera,emulsions, nourishing sera, powders, foundations, sprays, sunscreenagents, mask packs, gels, and the like, more preferably may beformulated into mask packs, sheet packs, sleeping packs, wash-off packs,peel-off packs, and the like, but is not limited to the formulations. Inthis case, such formulations may be properly chosen and changeddepending on a purpose.

MODE FOR INVENTION

Hereinafter, the present invention will be described in further detailwith reference to specific embodiments thereof and the accompanyingdrawings. However, it will be apparent to those skilled in the art thatthe present invention is not limited to the embodiments disclosed below,but various modifications and changes can be made to the aforementionedembodiments of the present invention.

Components listed in the following Table 1 were prepared to manufacturecomposite powders of Examples 1 and 2 below.

TABLE 1 Jade powder (Chuncheon jade) Manufactured by Oksanga Co., Ltd.Poly(methyl methacrylate) Manufactured by LG PMMA (PMMA) Dichloromethaneanhydrous Manufactured by Sigma-Aldrich (DCM) (Purity: >99.8%) Hexanol(or 1-hexanol) Manufactured by Sigma-Aldrich (Purity: >99%)

Example 1

The components listed in Table 1 were prepared, and a jade sphere wasmanufactured according to the following spray drying method.

Spray Drying

1) 40 g of PMMA was dissolved in 1 L of a solvent (DCM:hexanol=9:1 (% byweight)).

2) 40 g of jade powder was added to the PMMA solution, and thendispersed using a homogenizer.

3) The PMMA solution in which the jade powder was dispersed wasspray-dried according to the conditions listed in the following Table 2.

TABLE 2 Inside moisture 30% or more Inside temperature Maintained atroom temperature Inside pressure 20 atm Feed rate 20% Aspirator 70%

4) The PMMA solution in which the jade powder was dispersed wascontinuously stirred during the spray drying using a stirring machine.

5) The spray-dried jade powder/PMMA composite powder particles werethoroughly washed, and then freeze-dried to completely remove a residualsolvent, thereby obtaining the jade powder/PMMA composite powder.

Example 2

The components listed in Table 1 were prepared, and a jade sphere wasthen manufactured according to the following electro-spraying method.

Electro-Spraying

1) 0.4 g of PMMA was dissolved in 10 mL of a solvent (DCM:hexanol=9:1 (%by weight)).

2) 0.4 g of jade powder was added to the PMMA solution, and thendispersed using a sonicator.

3) The PMMA solution in which the jade powder was dispersed waselectro-sprayed according to the conditions listed in the followingTable 3.

TABLE 3 Inside moisture 30% or more Inside temperature Maintained atroom temperature Distance 15 cm Feed rate 20% Voltage 10 kV

4) The electro-sprayed jade powder/PMMA composite powder particles werethoroughly washed, and then freeze-dried to completely remove a residualsolvent, thereby obtaining the powder/PMMA composite powder.

Comparative Example 1

The jade powder listed in Table 1 was applied alone.

FIG. 1 is a scanning electron microscope (SEM) image of the jade powderof Comparative Example 1, and FIG. 2 is a scanning electron microscope(SEM) image of (A) a surface and (B) a cut-off plane of a jade sphere ofExample 1 in which such a jade powder is uniformly impregnated inpoly(methyl methacrylate) (PMMA) particles as a porous polymer. As shownin FIG. 1, as particles having an amorphous coarse structure, the jadepowder was subjected to spray drying and electro-spraying methods sothat the jade powder was uniformly impregnated in the poly(methylmethacrylate)(PMMA) particles as shown in FIG. 2.

FIG. 3 is an image of the jade sphere of Example 1 quantitatively andqualitatively analyzed using an energy dispersive X-ray (EDX)spectrometer: (A) is an image of the jade sphere of Example 1, and (B)is an image of individual elements included in the jade sphere after theelements are visualized by points. As main components of Chuncheon jadeused in the present invention, calcium (Ca, Red point) and magnesium(Mg, Blue point) ions were confirmed. As a result, it can be seen thatthe jade powder was distributed so that the jade powder was uniformlyimpregnated in the whole poly(methyl methacrylate) (PMMA).

Tests on Items

Hereinafter, tests on items of the jade sphere manufactured by the spraydrying method were carried out.

<Experimental Example 1> Reflectance Test

The reflectance spectra of subjects for tests were measured at awavelength range of 360 to 740 nm using a color difference meter(ColorMate commercially available from Scinco Co., Ltd., Korea). Then,PC software, ColorMaster, was used to measure the reflectance. Thereflectance was measured to calculate a light blocking rate in thecorresponding spectrum.

As shown in FIG. 4, it was revealed that both of the jade powder ofComparative Example 1 and the jade sphere of Example 1 had highreflectance in the visible light spectrum (380 to 710 nm), particularlythat the jade sphere of Example 1 had higher reflectance in a longwavelength range of 380 nm or more, compared to the jade powder ofComparative Example 1. In particular, it can be seen that the jadesphere of Example 1 had a high difference in the reflectance of light inthe blue light spectrum (380 to 500 nm), indicating that the jade sphereof Example 1 had a blue light-blocking rate higher than the jade powderof Comparative Example 1.

<Experimental Example 2> Whiteness (% R) Test

Whiteness is a value that one-dimensionally represents a degree of whitecolor. In the reflectance test, a whiteness index was calculated basedon XYZ color difference values in the entire visible light spectrumusing the following equation.WI=Y+800(x _(n) −x)+1,700(y _(n) −y)X _(n)=0.3101, Y _(n)=0.3162 (C/2°), X _(n)=0.3138, Y _(n)=0.3309(C/2°)  <CIE Whiteness>

As shown in FIG. 5, it was revealed that the jade sphere of Example 1had a whiteness of 94%, which was improved by 10%, compared to the jadepowder of Comparative Example 1 having a whiteness of 84%.

<Experimental Example 3> Porosity Measurement Test

To analyze porosity characteristics of the jade sphere of Example 1, amercury (Hg) intrusion assay was performed. The intrusion volume ofmercury, average pore size (4V/A, V: volume, and A: area) and porositywere measured using a porosimeter (Autopore IV 9500, Micrometrics,Londonderry, N.H., USA). The results are listed in Table 4.

TABLE 4 Total intrusion volume 1.6797 mL/g Total pore area 15.125 m²/gAverage pore diameter (4 V/A) 444.2 nm Bulk density at 0.20 psia 0.3832g/mL Porosity 64.37%

The term ‘total intrusion volume’ refers to an amount of mercuryintruded per unit gram, the term ‘total pore area’ refers to a totalpore area expressed as a cylindrical area, the term ‘average porediameter’ refers to an average value of the total pore sizes, and theterm ‘bulk density at 0.20 psia’ refers to a true density of a sampleincluding pores at 0.20 psia.

As a result, it can be seen that the jade sphere of Example 1 had anaverage pore size of 444.2 nm and a high porosity of 64.37%.

<Experimental Example 4> Oil Absorption Test

One gram of the jade sphere of Example 1 was weighed using a scale and aPetri dish, and an absorption rate of oil required until the jade sphereof Example 1 got wet by dropping triglyceride oil having physicalproperties similar to the human sebum using a spuit was measured. Inthis case, the oil was stirred with a spatula so that the jade sphere ofExample 1 was sufficiently wet with the oil.

As shown in FIG. 6, it can be seen that the jade sphere of Example 1 hadan oil absorption rate of 1.7 mL/g, which was very similar to the totalintrusion volume (1.6797 mL/g) of mercury in the porosity measurementtest of Experimental Example 3, which proved the reliability of theresults of measurement of the oil absorption rate. Also, it can be seenthat the oil absorption rate of the jade sphere of Example 1 increasedby up to 5 times, compared to the jade powder. This was an effectobtained when the jade sphere of Example 1 had a large pore size andhigh porosity although the jade sphere of Example 1 included the jadepowder at 50% by weight.

Hereinafter, the jade sphere manufactured in Example 1 was formulatedinto the form of an emulsion (for mask packs) based on the compositions(% by weight) listed in the following Table 5, and tests on items wasthen performed.

TABLE 5 Comparative Comparative Formulation Formulation FormulationItems Component Example 1 Example 2 Example 1 Oily phase Cetearylalcohol 4.00 4.00 4.00 part Stearic acid 0.50 0.50 0.50 Palmitic acid0.50 0.50 0.50 Hydrogenated lecithin 1.00 1.00 1.00 Glyceryl stearate1.50 1.50 1.50 Triethylhexanoin 3.00 3.00 3.00 Pentaerythrityl 4.00 4.004.00 tetraethylhexanoate Trisiloxane 2.00 2.00 2.00 Dimethicone 2.002.00 2.00 Aqueous fragrance Proper amount Proper amount Proper amountphase part purified water Proper amount Proper amount Proper amountDisodium EDTA 0.05 0.05 0.05 Glycerin 4.00 4.00 4.00 Propanediol 10.00 10.00  10.00  Other thickening and Proper amount Proper amount Properamount neutralizing agents preservative Proper amount Proper amountProper amount Chuncheon jade 0.00 1.00 0.00 Jade Sphere 0.00 0.00 1.00

<Experimental Example 5> Usability Evaluation Test

Thirty women of age from 25 to 35 years used the formulations ofComparative Formulation Examples 1 and 2 and Formulation Example 1 ofthe present invention twice a day for a month. Thereafter, the usabilityof the formulations as the cosmetics was evaluated in scores rangingfrom 1 to 5 by comparing the items such as adhesion, spreadability,softness, particle lumping, cosmetic durability, and the like. Theresults are listed in the following Table 6.

TABLE 6 Particle Cosmetic Items Adhesion Spreadability Softness lumpingdurability Comparative 5 5 5 1 3 Formulation Example 1 Comparative 2 3 25 2 Formulation Example 2 Formulation 4 4 5 2 5 Example 1

Looking at Table 6, it was revealed that the formulation of ComparativeFormulation Example 2 including the Chuncheon jade powder had higherparticle lumping and lower estimation values for all the items includingadhesion, spreadability, softness and cosmetic durability, compared tothe formulation of Comparative Formulation Example 1 including no jadepowder. On the other hand, it was revealed that the formulation ofFormulation Example 1 including the jade sphere had significantlyreduced particle lumping and improved adhesion and spreadability,compared to the formulation of Comparative Formulation Example 2including the Chuncheon jade powder, and had similar or improvedsoftness and cosmetic durability, compared to the formulation ofComparative Formulation Example 1.

Therefore, the jade sphere of the present invention had excellentoutcomes such as softness derived from the spherical shape thereof, andcosmetic durability derived from the oil absorption of sebum caused dueto high porosity thereof. Also, it can be seen that a white cast may beprevented by significantly improving the particle lumping which had beenconsidered as the biggest problem of the formulation of ComparativeFormulation Example 2 including the jade powder.

<Experimental Example 6> Reflectance Test of Formulation

To measure light-blocking rates of the formulations of ComparativeFormulation Examples 1 and 2 and Formulation Example 1 in the visiblelight spectrum, the reflectance spectra of subjects for tests weremeasured at a wavelength range of 360 to 740 nm using a color differencemeter (ColorMate commercially available from Scinco Co., Ltd., Korea).Then, PC software, ColorMaster, was used to measure the reflectance.

As shown in FIG. 7, it was revealed that all the manufacturedformulations of Comparative Formulation Examples 1 and 2 and FormulationExample 1 had outcomes similar to the results of the reflectance testsperformed on the jade spheres in a powdery state. In particular, it canbe seen that the jade sphere of Preparative Example 1 had a highdifference in the reflectance of light with shorter wavelengths in theblue light spectrum, indicating that the jade sphere had a high bluelight-blocking rate even when prepared into formulations.

<Experimental Example 7> Whiteness (% R) Test of Formulations

Whiteness of a formulation is a value that one-dimensionally representsa degree of white color. In the reflectance test of the formulation, awhiteness index was calculated based on XYZ color difference values inthe entire visible light spectrum using the following equation.WI=Y+800(x _(n) −x)+1,700(y _(n) −y)X _(n)=0.3101, Y _(n)=0.3162(C/2°), X _(n)=0.3138, Y_(n)=0.3309(C/2°)  <CIE Whiteness>

As shown in FIG. 8, it can be seen that the whiteness of each of theformulations of Comparative Formulation Example 2 and FormulationExample 1 including the jade powder or jade sphere was significantlyimproved, compared to the formulation of Comparative Formulation Example1 including no jade powder. Here, it was revealed that the jade sphereof Formulation Example 1 had the highest whiteness although there was aslight difference in whiteness between the formulations.

Formulation Example 2

Hereinafter, a face lotion containing 0.1% by weight of the jade spheremanufactured in Example 1 was manufactured based on the compositions (%by weight) listed in the following Table 7 using a conventional method.

TABLE 7 Component content (% by weight) Purified water Balance Glycerin8.0 Butylene glycol 4.0 Hyaluronic acid extract 5.0 β-Glucan 7.0Carbomer 0.1 Glucoceramide & 7,8,4′-trihydroxyisoflavone 0.05Caprylic/capric triglyceride 8.0 Squalane 5.0 Cetearyl glucoside 1.5Sorbitan stearate 0.4 Cetearyl alcohol 1.0 Triethanolamine 0.1 JadeSphere 0.1

Formulation Example 3

Hereinafter, a nourishing cream containing 3.0% by weight of the jadesphere manufactured in Example 1 was manufactured based on thecompositions (% by weight) listed in the following Table 8 using aconventional method.

TABLE 8 Component Content (% by weight) Purified water Balance Glycerin3.0 Butylene glycol 3.0 Liquid paraffin 7.0 B-glucan 7.0 Carbomer 0.1Glucoceramide & 7,8,4′-trihydroxyisoflavone 3.0 Caprylic/caprictriglyceride 3.0 Squalane 5.0 Cetearyl glucoside 1.5 Sorbitan stearate0.4 Polysorbate 60 1.2 Triethanolamine 0.1 Jade sphere 3.0

Formulation Example 4

Hereinafter, a massage cream containing 5.0% by weight of the jadesphere manufactured in Example 1 was manufactured based on thecompositions (% by weight) listed in the following Table 9 using aconventional method.

TABLE 9 Component Content (% by weight) Purified water Balance Glycerin8.0 Butylene glycol 4.0 Liquid paraffin 45.0 B-glucan 7.0 Carbomer 0.1Glucoceramide & 7,8,4′-trihydroxyisoflavone 1.0 Caprylic/caprictriglyceride 3.0 Wax 4.0 Cetearyl glucoside 1.5 Sorbitan sesquioleate0.9 Vaseline 3.0 Paraffin 1.5 Jade sphere 5.0

The invention claimed is:
 1. A composite powder in which jade powderparticles are impregnated in a porous polymer, wherein the jade powderparticles are impregnated at a content of 50 to 90% by weight, based onthe total weight of the composite powder; the porous polymer is selectedfrom the group consisting of poly(vinyl pyrrolidone) (PVP),poly(caprolactone) (PCL), poly(L-lactic acid) (PLLA), and a mixturethereof; the composite powder has an average pore size of 250 to 600 nm;and the composite powder has a porosity of 40 to 85%.
 2. The compositepowder of claim 1, wherein the composite powder has an average particlediameter of 5 to 20 μm.
 3. A cosmetic composition comprising thecomposite powder of claim
 1. 4. The cosmetic composition of claim 3,wherein the composite powder is included at a content of 0.1 to 5.0% byweight, based on the total weight of the cosmetic composition.
 5. Thecosmetic composition of claim 3, wherein the cosmetic composition isformulated into any one form selected from the group consisting of atoner, a lotion, a cream, a serum, an emulsion, a nourishing serum, apowder, a foundation, a spray, a sunscreen agent, a mask pack, and agel.
 6. A method for manufacturing a composite powder according to claim1 in which jade powder particles are impregnated in a porous polymer,comprising: spray-drying or electro-spraying a dispersion in which jadepowder is dispersed in the porous polymer solution to manufacture thecomposite powder, wherein the porous polymer comprises poly(vinylpyrrolidone) (PVP), poly(caprolactone) (PCL), or and poly(L-lactic acid)(PLLA).
 7. The method of claim 6, wherein the porous polymer solution isobtained by dissolving the porous polymer in a mixed solvent ofdichloromethane and hexanol.
 8. The method of claim 7, wherein thedichloromethane and the hexanol are present at a weight ratio of 9:1 to7:3.
 9. A method for manufacturing a composite powder in which jadepowder particles are impregnated in a porous polymer, comprising:spray-drying or electro-spraying a dispersion in which jade powder isdispersed in the porous polymer solution to manufacture the compositepowder, wherein, the jade powder particles are impregnated at a contentof 50 to 90% by weight, based on the total weight of the compositepowder; the porous polymer is selected from the group consisting ofpoly(vinyl pyrrolidone) (PVP), poly(caprolactone) (PCL), poly(L-lacticacid) (PLLA), and a mixture thereof; the composite powder has an averagepore size of 250 to 600 nm; and the composite powder has a porosity of40 to 85%.